code: def get_generation_value(cls, obj):
      if obj not in cls.generation_values:
          return -1
      return cls.generation_values[obj]
  
file_path: pytorch/torch/_dynamo/mutation_guard.py
imports: import functools
  import weakref
  import torch.nn
  from torch.nn import Module
  from .utils import ExactWeakKeyDictionary, is_lazy_module
label_desc: Use image node_id 3 for calling the GenerationTracker obj's underlying member method code with example usage: obj.get_generation_value(cls, obj) and returns: cls, unknown